Based on information submitted to the MLS GRID as of 2026-10-01 05:06:54 UTC. All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information.
Wonder Lake, IL community profile
Population
4,076
Median income
$98,010
Housing units
1,564
People per sq. mi.
277.3
Area
14.7 sq. mi.
Source: HJN community data
Wonder Lake housing market
September 2026 · This period is still settling
Homes that sold · County records, as of Sep 10, 2026
Median sale price
$249,000$208,500–$295,000 typical range
Price per sq. ft.
$169
Sales
11
Paid in cash
45.5%
Homes on the market · MLS, as of Sep 27, 2026
Median list price
$284,450
Homes for sale
30
Price trend · Assessor repeat sales, as of Sep 30, 2026
Year-over-year
12.2%
Housing stock — every home in the area, not only the ones selling or listed · Assessor records, as of Sep 11, 2026
10
